Waste ejector for box-blanking machines



y 1929- L. H. SCHROEDER ET AL. 1,713,

WASTE EJECTOR FOR BOX BLANKING MACHINES Filed Nov. 30, 1927 M l 351 mflttowea /o Patented May 14, 1929.

UNITED STATES LOUIS H. SCHROEDER, OF WOODHAVEN, AND JOSHUA. WAGNER,

YORK.

F BROOKLYN, NEW

WASTE EJECTOR FOR BOX-BLANKING MACHINES.

Application filed November 30, 1927. Serial No. 236,616.

The invention relates to machines for blanking out boxes, moreparticularly boxes made of heavy paper such as the double-facedcorrugated paper board now in general use for such purposes, theblanking machine 1nvolving cooperating rotary male and female slottingheads which cut slots in the blank, leaving waste chips in the groove ofthe female slotting head which must be ejected therefrom.

llhe primary object of the present invention is to provide a wasteejector for machines of the above type which will be exceedingly simpleand reliable in construction and operation, and which may beautomatically adj usted along wit-h the corresponding slotting heads andscoring members, whenever the machine is set to operate on blanks ofdifferent widths, without requiring extra sliding connections orsupporting parts to be included in the machine for the waste ejector.

Further objects and advantages of the invention will be in part obviousand in part specifically pointed out in the description hereinaftercontained which, taken in conjunction with the accompanying drawings,discloses a preferred embodiment of the invention; such embodimenthowever is to be considered as merely illustrative of its principles. Inthe drawings- Fig. 1 is a vertical sectional view showing a wasteejector constructed in accordance with the invention. In operativerelation to the slotting heads and scoring members of a rotary slottingand scoring machine.

Fig. 2 is a detail view of the parts making up the waste ejectorhereinafter described.

The slotting and scoring mechanism of the machine may be of known type,involving for example a male slotting head 1 supported by and rotatingwith a shaft 2, and having a pair of sector-like slotting blades 3 whichrun in a peripheral groove 4 of a cooperating fe male slotting head 5supported by and rolating with a shaft 6.

A suitable scoring member also will usually be employed consisting forexample of a rotating disk 7, carried by shaft 8 and pressing the blankagainst some suitable surface such as roll 9, the paper blank beingfirst fed between the scoring member 7 and roll 9 to form a crease orscore therein, and then fed between the male and female slotting dies 1and 5, to form slots at the opposite ends of the crease. The completemachine will also be understood as usually provided with three or moresets of slotting heads and scoring members as above described, andsuitable means for feeding the blanks thereto in proper timed relation,which features of the machine it is not deemed necessary to describe indetail herein.

In accordance with the present invention, we provide a waste ejectorrunning in the groove 4 of the female slotting head, which is held inproper position by the corresponding scoring member, such waste ejectorbeing preferably of annular form and supported by the female slottinghead, so that it entails the use of no added parts on the machine tohold it in place. For example, the waste ejector shown in the drawingshas an annular body portion 10 which runs in the groove 4 of the femaleslotting head, and is supported by the latter, and said waste ejector isalso provided with a concave portion 11 which is adapted to bear againstcreasing member 7 to hold the waste ejector in proper position, that is,prevent it from turning around with the female slotting head.

The invention has special advantages in connection with slotting andscoring machines of the quick-set type, that is in which the slottingand creasing members are interlocked so as to be simultaneously axiallyadjustable in setting the machine to operate upon blanks of Varyingwidths. As shown, the creasing member 7 also projects into the groove 4,of the female slotting head whereby when one of the slotting blades 3 ofthe male slotting head also engages in such groove, the slotting,scoring and waste ejecting elements are all interlocked so as tomaintain proper alinement in setting the machine It will be notedfurthermore that all extra parts for supporting the waste ejector so asto permit it to slide along when the n'lachine is adjusted, or to holdit in proper operative position, are eliminated.

To facilitate setting the slotting and scoring members axially forblanking out boxes of different widths and thicknesses, suitable meansmay be employed such as a bar hav ing a handle 12 adapted to fit innotches 13 of an angle bar 14; extending alon: of the machine, thebranches 15 of t being adapted to bear against the hubs of the slottingheads 1 and 5, whereby as the b r is rocked with one of the blades in t.ment with the groove 4 of the female slotting ejector,

head and that it ejects the chips further under the machine than is the'case with fingers as heretofore used for such purposes which usuallyhave'thrown the chips out the back of the machine where they may fall inbetween the completed blanks. For convenience in assembling, the wasteejector may be made in two parts with overlapping ends 17 provided withscrew holes to enable the parts to be fastened together when placed inthe groove of the female slotting head.

While a speclfic embodiment of the invention has been disclosed it willbe obvious that many chan es may be made therein without departing fromits principles as set forth in the appended claims.

We claim 1. In a box making machine, a rotary female slotting headhaving a peripheral roove therein, a rotary male slotting head aving oneor more blades adapted to project into said groove, a scoring memberpositioned at one side of the female slotting head, and a waste ejectoracting in the groove of the female slotting head, said waste ejectorbeing interposed between the scorin member and the bottom of the grooveand liaving a part engageable with the scoring member to preventrotation of said waste ejector.

2; In a box making machine, a female'slotting head, having a peripheralgroove therein, a male slotting head having one or more blades adaptedto project into said groove, a a scoring member positioned at one sideof the female slotting head and a waste ejector acting in the groove ofthe female slotting head and held in position by said scoring member.

3. In a box making machine, a female slotting head having a peripheralgroove therein, a male slotting head having one or more blades adaptedto project into said groove, a scoring member ositioned at one side ofthe female slotting ead and an annular waste ejector acting in thegroove of the female slotting head, said scoring'member also ongaging insaid groove.

4. In a box making machine, a female slotting head having a peripheralgroove therein, a male slotting head having one or more blades adaptedto project into said groove, a scoring member positioned at one side ofthe female slotting head and an annular waste ejector acting in thegroove of the female slotting head, means being provided to preventrotation of said waste ejector.

5. In a box making machine, a female slotting head having a peripheralgroove therein, a male slotting head having one or more blades adaptedto project into said groove, a scoring member positioned laterally ofthe female slotting head, said scoring member engagingin the groove ofthe female slotting head, and a waste ejector also acting in saidgroove, said waste ejector being supported by the female slotting head.

'6. In a box making machine, a female slotting head having a peripheralgroove therein, a male slotting head having one or more blades adaptedto project into said groove, a scoring member positioned at one side ofthe female slotting head, and a waste ejector acting in the groove ofthe female slotting head, said waste ejector having a concave portionadapted to engage against the periphery of the scoring member.

.7. In a box making machine, a female slotting head having a peripheralgroove therein, a male slotting head having one or more blades adaptedto project into said groove, and a wasteejector acting in said groove,said waste ejector being supported by the female slotting head, wherebythe waste ejector Wlll move axially with said female slotting head whenthe latter is shifted.

8. In a box making machine, a rotary female slotting head having aperipheral groove therein, a rotary male slotting head having one ormore blades adapted to project into said groove and an annular wasteejector carried by the female slotting head in said groove andprojecting outwardly from the groove at one or more points, means beingprovided to prevent said waste ejector from rotating with the femaleslotting head.

In witness whereof we have hereunto set our hands this 25th day ofNovember, 1927.

LOUIS H. SCHROEDER. JOSHUA WAGNER.

